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2011

Effect of paddy dehusking rate in rubber roll sheller on the milling quality of different rice varieties

Author:Mohammad Reza Alizadeh and Mohammad Hashem Rahmati

Abstract:
In this study, the effect of paddy dehusking rate in rubber the roll sheller at four levels of 60, 70, 80 and 90% were investigated on some milling properties as head brown rice yield (HBY), head rice yield (HRY) and whiteness of three Iranian rice varieties namely Binam, Khazar and Sepidroud was examined. The results revealed that the HBY decreased from 92.58 to 89.72%, 90.83 to 86.61% and 84.83 to 78.18% for Binam, Khazar and Sepidroud varieties, respectively as the paddy dehusking rate increased from 60 to 90%. However, the highest HRY of 82.17% was observed for Binam variety at the dehusking rate of 80% and the lowest value of 65.97% was recorded for Sepidroud variety at the husking rate of 60%. There was an increasing trend for rice whiteness with decreasing in paddy dehusking rate. It was decreased from 36.1 to 30.8, 36.5 to 30.1 and 35.4 to 29.8 for the varieties of Binam, Khazar and Sepidroud varieties, respectively as the paddy dehusking rate increased from 60 to 90%.